Should i get my cat bathed at a groomers? hairball problem?

I have two cats who almost on a daily basis spit up clear fluid with hair in it. They are both black so I see the hair very clearly. sometimes it is an actual hairball, other times just piece of hair. but this goes on all the time. Should i have them bathed at a groomer? I know a groomer who bathes cats. will this help? Why is this happening? Thank you.